BL Lac and more

Yesterday afternoon an onshore wind started and cleared out the high smoke which had been hovering over the Bay Area the last couple of days, giving us the gift of a clear sky.  The seeing was forecasted to be good so I opened up the 20-inch.  To my surprise the seeing was good, enough to go after some challenging pair.

I'll mention it first, but it was my second to last observation of the night: BL Lac has brightened to 12th magnitude, the brightest in a century, so I had a look at it with the aid of an AAVSO finder chart.  It looked like any of the faint 12-13th magnitude stars in the field, but once found I wondered at the 900 million year old photons from the active galaxy I could see from my back yard.

HU 940 AB: 508; 667x: Hairline at 445x, split with 667x, slightly unequal white stars.  Physical with 111.6-year period, it will tighten in the next couple of decades.
19h 05m 30.86s +33° 52' 21.5" P.A. 186.50 sep 0.4 mag 9.18,9.78 Sp F8 dist. 93.63 pc (305.42 l.y.)

A 703 AB: 508; 533x" B is a very fine small point which resolves within A's diffraction ring with seeing only.  A is a light yellow white. Very tough.  No Gaia data on the B star.

19h 07m 12.17s +44° 50' 30.4" P.A. 189.00 sep 0.6 mag 9.01,9.28 Sp G0 dist. 543.48 pc (1772.83 l.y.)

A 152 AB: 508; 205x: Attractive triple, the close pair is around 2" and near equal, C is wide and one delta.  All the stars are white.  Not physical.
19h 10m 33.10s +37° 00' 51.1" P.A. 3.00 sep 2.6 mag 10.54,10.64 Sp A5

SE 2 BC: 508; 1334x: This is a component of STF2481 which I viewed through the 6-inch recently.  I see a very slight elongation to B all powers, but no resolution or notching.  Physical with a 62.79-year period, it will thankfully widen and be a far easier target (at 0.3") by 2030.

19h 11m 07.99s +38° 46' 52.4" P.A. 256.10 sep 0.2 mag 8.31,9.40 Sp G5V dist. 52.85 pc (172.4 l.y.)

HU 941 AB: 508; 533x: Very much fainter B lies on yellow-orange A' diffraction ring.  There is no parallax overlap, -53%, so these are not gravitationally bound
19h 12m 14.80s +32° 15' 10.0" P.A. 146.00 sep 1.1 mag 7.45,11.01 Sp A1V dist. 334.45 pc (1090.98 l.y.)

DA 13 AB: 508; 445x: Very delicate light yellow-orange A and bluish B, very much fainter, <2", a nice fine point.  Unfortunately they do not share parallax ranges, so not gravitational.
19h 44m 44.02s +44° 55' 44.0" P.A. 274.00 sep 2.0 mag 7.42,11.60 Sp K0

STT 385 AB: 508; 205x: Bright white A and 2 delta mag B just separated at low power.  This one is likely gravitational, 94% parallax overlap, 757 AU weighted separation, high stellar mass 4.01/2.67.
19h 45m 48.77s +40° 33' 18.9" P.A. 51.00 sep 1.2 mag 7.77,9.58 Sp B7IV dist. 793.65 pc (2588.89 l.y.)

A 601 AB: 508; 205x: 1 delta mag well split white stars.  Not physical, no parallax overlap.

19h 45m 57.37s +41° 44' 56.7" P.A. 156.00 sep 1.2 mag 10.40,11.40 Sp F0

Closed with a look at Saturn which had just cleared the meridian tree, the view was pretty good be seeing was worse lower in altitude.  Packed it in a 12:30am.